BC557 PDF Specs and Replacement
The BC557 is a widely used PNP bipolar junction transistor designed for low-power, general-purpose amplification and switching. It typically operates with a collector current up to 100mA and a collector-emitter voltage rating of 45V, making it suitable for analog signal stages and low-noise applications. Its DC current gain ranges roughly from 120 to 800, depending on subtype (A, B, C). It is commonly used in audio preamps, sensor interfaces, level-shifting circuits due to its stability and ease of integration.
Type Designator: BC557
Material of Transistor: Si
Polarity: PNP
Absolute Maximum Ratings
Maximum Collector Power Dissipation (Pc): 0.625 W
Maximum Collector-Base Voltage |Vcb|: 50 V
Maximum Collector-Emitter Voltage |Vce|: 45 V
Maximum Emitter-Base Voltage |Veb|: 5 V
Maximum Collector Current |Ic max|: 0.1 A
Max. Operating Junction Temperature (Tj): 150 °C
Electrical Characteristics
Transition Frequency (ft): 75 MHz
Collector Capacitance (Cc): 3 pF
Forward Current Transfer Ratio (hFE), MIN: 120
Noise Figure, dB: -
Package: TO92
BC557 Substitution
BC557 PDF detailed specifications
bc556 bc557 bc558.pdf
MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by BC556/D Amplifier Transistors BC556,B PNP Silicon BC557A,B,C COLLECTOR BC558B 1 2 BASE 3 EMITTER MAXIMUM RATINGS 1 2 BC BC BC 3 556 557 558 Rating Symbol Unit CASE 29 04, STYLE 17 Collector Emitter Voltage VCEO 65 45 30 Vdc TO 92 (TO 226AA) Collector Base Voltage VCBO 80 50 30 Vdc ... See More ⇒
bc556 bc557 3.pdf
DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D186 BC556; BC557 PNP general purpose transistors 1999 Apr 15 Product specification Supersedes data of 1997 Mar 27 Philips Semiconductors Product specification PNP general purpose transistors BC556; BC557 FEATURES PINNING Low current (max. 100 mA) PIN DESCRIPTION Low voltage (max. 65 V). 1 emitter 2 base APPLICATIONS ... See More ⇒
bc556 bc557 bc558 bc559 bc560.pdf
BC556/557/558/559/560 Switching and Amplifier High Voltage BC556, VCEO= -65V Low Noise BC559, BC560 Complement to BC546 ... BC 550 TO-92 1 1. Collector 2. Base 3. Emitter PNP Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25 C unless otherwise noted Symbol Parameter Value Units VCBO Collector-Base Voltage BC556 -80 V BC557/560 -50 V BC558/559 -30 V... See More ⇒
bc556 bc557 bc558.pdf
Continental Device India Limited An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company BC556, A, B, PNP SILICON PLANAR EPITAXIAL TRANSISTORS BC557, A, B, C BC558, A, B, C TO-92 Plastic Package For Lead Free Parts, Device Part # will be Prefixed with E B "T" C Amplifier Transistors ABSOLUTE MAXIMUM RATINGS (Ta=25 C) DESCRIPTION SYMBOL BC556 BC557 BC558 UNITS Collector Emi... See More ⇒
Detailed specifications: BC550CP , BC551 , BC556 , BC556A , BC556AP , BC556B , BC556BP , BC556VI , 13003 , BC557A , BC557AP , BC557B , BC557BP , BC557C , BC557VI , BC558 , BC558A .
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